1Slots 0 and 3 are capable
of accepting either PCIe or XAUI cards. You can only install one type
of card.

Note - As a general rule, the PCIe and PCIe/XAUI slots should be populated sequentially,
beginning with slot 0 and progressing to slot 5. This general rule does
not apply to I/O cards that have special slot restrictions. For guidance on
these restrictions, see the table, PCIe Slot Usage Rules for Certain HBA Cards
in the SPARC T4-1 Server Product Notes.